Pseudo hypothyroidism may be defined as a deceased T4 level in a euthyroid person. This may occur with (1) decreased TBG or TBG binding (congenital or drug induced), (2) certain medications (e.g., phenytoin, lithium, dopamine, corticosteroid), (3) some patients with severe non thyroidal illness, (4) some clinically euthyroid patients with Hashimoto’s thyroiditis, (5) after recent […]